Home / 398,560,964.20-597,841,446.30-289,721,847.40

Finding the Fourth Proportional to 398,560,964.20, 597,841,446.30 and 289,721,847.40

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Solution

The fourth proportional to 398,560,964.20, 597,841,446.30 and 289,721,847.40 is: 434,582,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,560,964.20 : 597,841,446.30 = 289,721,847.40 : x
  2. Step 2: Convert to fraction form
    398,560,964.20/597,841,446.30 = 289,721,847.40/x
  3. Step 3: Cross multiply
    398,560,964.20x = 597,841,446.30 × 289,721,847.40
  4. Step 4: Simplify right side
    398,560,964.20x = 173,207,728,274,323,872
  5. Step 5: Solve for x
    x = 173,207,728,274,323,872/398,560,964.20
  6. Step 6: Final answer
    x = 434,582,771.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.